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WRT54GL not download fast via wireless

Discussion in 'Cisco/Linksys Wireless Routers' started by mealto, Oct 28, 2006.

  1. mealto

    mealto LI Guru Member

    I am getting 550 KB/s when using a wired computer through the WRT54GL. Wireless notebook downloading the same 10 MB file, I am only getting 180 KB/s. What is wrong and how can I fix this?

    My internet connection is a 10 mbit line and notebook is getting excellent signal strength to router. Currently, only running default linksys router. Is ti time to try a 3rd party firmware? Any tips would be great.
  2. Toxic

    Toxic Administrator Staff Member

  3. mealto

    mealto LI Guru Member

    Hey Toxic,

    Thanks for the link. I first thought it was a signal strength issue as well but Windows show excellent strength and my on-board adapter detects about -60dB. That should be pretty good right?

    The funny thing is, when I use wireless on the notebook to test at speakeasy.net, I can consistently get 4800 kbps down and 480 kbps up. Not sure why downloading from 2 fast data centers in the US only yield 170 KB/s max (wireless) but when plugging a cat-5 cable into the notebook, download speed jumps to 500KB/s.

    Any more thoughts?
  4. mstombs

    mstombs Network Guru Member

    Could be a TCP/IP latency issue, server won't send next packet till last one acknowledged - see what this page says about your connection


    Mine says:

    Your TCP Window limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
    Your TCP Window limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
    any difference between wired and wireless? If you do tweak settings I am not sure if they are per adapter or global.
  5. mealto

    mealto LI Guru Member

    Hey mstombs, I didn't even bother checking between wired and wireless. I ran the test and made RWIN changes for my wirless adapter and as you predicted, it was the latency issue. Suggestions from the test was a range so I had to change it a few times and found a sweet spot. Too high a value and packets were being dropped an ddownload speed was ok. Too low and download max speed was not great. Finally found a value where I can almost get max download speed from wireless as I do with wired. Gotta love the 400-500 KB/s downloads! Thanks.

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